Australian researchers have found that a form of vitamin B3 (nicotinamide or niacinamide), significantly reduces the incidence of non-melanoma skin cancers in those with a previous history of basal cell carcinoma or squamous cell carcinoma. Those who took 500 milligrams of vitamin B3 twice a day cut their chances of developing new skin cancers by 23 percent.
It is important to note that this is not a substitute from sun-protection with sunscreens or clothing, but it can boost your prevention measures when combined with good protection measures. While these preliminary results are part of an ongoing investigation, vitamin B3 is safe and inexpensive. The Doctors at Dawson Dermatology are now recommending that anyone with a history of skin cancer should consider adding this to their daily routine.
Niacinamide or nicotinamide can be purchased at most online pharmacies. Not all local pharmacies carry it currently. Niacin is also a form of vitamin B3, but is not recommended because it can cause significant flushing is some people. Here is a short list of trusted brands and vendors for reference.
Click this link to view the complete abstract from the Journal of Clinical Oncology.